Filter



April 29, 1941. L.. w. WILLIAMS V2,239,868

FILTER l Filed Oct. 27, 1938 2 Sheets-Sheet l ATTORNEYS April 29, 1941.

L. W. WILLIAMS FILTER 2 sheets-sheet 2 Filed Oct. 27, 1938 INVENTOR LMU/4 BYJt-g'pk @ou ATTORNEY!` Patented Apr. 29, 1941 2,239,868 FILTER Lewis w. williams, short mns, N.

J., assigner to Motor Improvements, Inc., Newark, N. J., a corporation of Delaware Application October Z7, 1938, Serial No. 237,167

- 9 claims. (c1. 21o-165) This invention relates to filters and more especially to filters for use in connection with internal combustion engines either to lter the lubricant or the fuel.

An object of this invention is s meer having a lter unit in which the ltering material is so supported and arranged that when spent, it may be easily and quickly removed from the other parts of the filter unit and fresh filtering material substituted in place of the spent filtering material.

In a lter unit embodying the invention, there is provided a filtration member consisting preferably of an endless strip of perforate metallic material, such, for example as wire mesh infolded to form flanges extending radially from a central tubular passage and a length of filtering material such, for example, as ltering paper impregn-ated with Bakelite surrounding said Wire` mesh and contacting the outer surface thereof. To complete the filter unit, there is a cap contacting each end of the filtration member, such caps preferably being resiliently pressed against the ends of the filtration member to seal the same against the ow of iluid therein-to, The liquid to be filtered is `supplied to the outer surface of the strip of ltering material and the filtered liquid is removedV from the interior of 'the ltration member through a suitable outlet.

In Aone form of filtration member, the edges of the'filter strip are folded over the edges of the wire mesh and clamped thereto while in another form there is no interconnection between the Wire mesh and the lter strip, the latter being maintained in contact with the perforate metallic maf` terial solely by being similarly folded and being retained in folded position by engagement of its edges with anges provided on the caps.` In the first form, both the perforate metallic material and the filter strip constitute a unit and when the lter strip isspent, such unit is removed and a new unit substituted for it. In the second form, merely the lter strip is removed when spent and a fresh strip substituted for it. 'I'he removal of the spent -ltering material and replacement with new ltering material is made possible by the provision of supporting means for the caps and filtration member of such nature that one cap is easily disengageable from the end of the filtrationlmember 'which is then free'to be lifted away from its supporting means. i

Other objects, novel features and advantages of this invention' will become apparent from the following specification and accompanying drawings, wherein:

Fig. 1 is a vertical section through a lter equipped with one form bodying the invention; c Fig. 2 is a section on the line 2 2 of Flg. 1;

Fig. 3 is a perspective view of apartially completed ill-tration unit;

Fig. 4 is a perspective view of a filtration unit in condition for insertion into the filter; y

Fig, 5 is a fragmentary enlarged section similar to Fig. 1; v

Fig. 6 is a fragmentary bottom view of Fig. 5;

Fig. 7 is a view similar toFig. 1 disclosing a modified filtration unit;

Fig. 8 is asection on the line 8-8 of Fig. '7;

Figs. 9 and 10 are perspective views of the ltering material and support therefor respectively, and

l Fig, 11 is a perspective viewof terial in condition for shipment.

Referring now more especially to Figs. l to 6 inclusive, a base I0 supports a casing or shell II,

the rim of which ts into a groove in the base and the shell and baseare held in assembled re' i lation by a post I2 passing through an aperture in the top of the shell and being screwed into a threaded socket in the base, ahead I 3 being provided on the post for rotating it and also for engaging the shell Il for clamping purposes. In

the base is provided an inlet passage `I3 and an is arranged Vaoutlet passage I4 between which by-pass passage I5 controlled by a spring-actuated relief valve I6. The outlet passage Il ter-` f minates in -a central recess l1 surroundingthe post I 2. The foregoing structure is conventional 1 and does not constitute any part of the instant invention.

An apertured tubular member I8 surrounds the post I 2 with its lower end being seated inthe` recess I'I, such lower end being of larger diam-,I eter than the remainder to form a shoulder above which is arranged a cap I9 having an upturned y peripheral flange. The cap I9 carries an annular member 20, the major portion of which is spaced from the cap with its inner edge rib I8a formed in the lower end of tubular mem` ber I8 and engaging the rim of the socket.

Through the medium of theannular member 2li, the c-ap I9 is resiliently supported from lthe rib I8a. A gasket 2I of blotting paper or 4the like is arranged in the cap I9 and is engaged by the bottom edge of the the cap 23 is arranged a gasket 24 of blottingv of ltration vunit emthe ltering maresting on'` the ltration member 22, A sec-V ond cap 23 is associated with the tubular member I8 and has a down-turned peripheral flange, In'v ber, an apertured tube extending through said central 'passage and said caps, anges extending from said caps and engaging the outer face of said strip along the edges thereof,l said flanges constituting the sole means for maintaining said ltering material in. contact with said perforate metallic material, and resilient means carried by said tube for pressing said caps against the ends of said filtration member. f

4. A filter unit comprising a self-sustaining filtration member consisting of an endless strip of perforate metallic material lnfolded to form flanges extending radially from a central tubular passage and a length of filtering material contacting the entire outer face of said perforate metallic material, a cap engaging the entire sur- I face of each end of said ltration member, an apertured tube extending through said central passage and said caps, and means including a member removably supported by said tube resiliently forcing said caps against the ends of said ltration member.

5. A iilter unit comprising a self-sustaining filtration member consisting of an endless strip of perforate metallic material infolded to form flanges extending radially from a central tubular passage and a length of ltering material contacting the entire outer face of said perforate metallic material, a cap engaging the entire surface of each end of said illtra-tion member, an apertured tube extending through said central passage and said caps, a resilient member carried by one cap, and means supported by said tube engaging said resilient member to force said caps against the ends of said filtration member.

6. A filter unit comprising a Aself-sustaining filtration member consisting of an endless strip of perforate metallic material infolded to form flanges extending radially from a central tubular passage and a length of filtering 'material contacting the entire outer face of said perforate metallic material, a cap engaging the entire surface of each end of said filtration member, a resilient member carried by one cap, an apertured tube extending through said central passage and said caps, a stop on said tube engaged by the and a member removably suptube engaging said resilient remaining cap, ported by said member.

7. A filter unit comprising a self-sustaining filtration member consisting of an endless strip of `perforate metallic material infolded to form flanges extending radially from a central tubular passage and alength of filtering material contacting the entire outer face of said perforate metallic material, a cap engaging the entire surface of each end of said filtration member, a resilient member carried by one cap, an apertured tube extending through said central passage and said caps, a lstop on 'said tube engaged by the remaining cap, and a nut threaded on to said tube and engaging said resilient member.

8. A filter unit comprising a self-sustaining iiltration member consisting of an endless strip of perforate metallic material infolded to form anges extending radially from a central tubular passage and a length of filtering material contacting the entire outer face of said periorate metallic material, a cap engaging the entire surface of each end of said filtration member, an apertured tube extending through said central passage and said caps, means supporting one cap from said tube, and means including a member removably supported by said tube resiliently forcing said remaining cap against the end of said filtration member.

9. A lter unit comprising a self-sustaining filtration member consisting of an endless strip of perforate metallic material infolded to form flanges extending radially from a central tubular' passage and an endless strip of filtering material folded to engage the entire outer face of said perforate metallic material and being free for movement longitudinally thereof, caps engaging the entire edges of said strip, and means resiliently forcing said caps against said ends, said caps having flangesy engaging portions of the outer face of said strip of filtering material and constituting the sole means for maintaining said strip of ltering material in assembled relation to said strip of perforate metallic material.

, LEWIS W. WILLIAMS.' 

